123

backend/api_service/app/dependencies.py

@@ -0,0 +1,50 @@
+"""
+Shared dependencies for API Service routes.
+Provides JWT-based authentication via get_current_user.
+"""
+
+from fastapi import Depends, HTTPException, Security, status
+from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select
+
+from shared.models import get_db, User
+from auth_service.app.utils.security import decode_access_token
+
+security = HTTPBearer()
+
+
+async def get_current_user(
+    credentials: HTTPAuthorizationCredentials = Security(security),
+    db: AsyncSession = Depends(get_db),
+) -> User:
+    """Validate JWT and return the current User ORM instance."""
+    payload = decode_access_token(credentials.credentials)
+    if payload is None:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid or expired token",
+        )
+
+    user_id = payload.get("sub")
+    if not user_id:
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid token payload",
+        )
+
+    result = await db.execute(select(User).where(User.id == user_id))
+    user = result.scalar_one_or_none()
+
+    if user is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="User not found",
+        )
+    if not user.is_active:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="User account is deactivated",
+        )
+
+    return user